18 lines
298 B
Go
18 lines
298 B
Go
package objects
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import (
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"fmt"
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)
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func builtinIsUndefined(args ...Object) (Object, error) {
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if len(args) != 1 {
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return nil, fmt.Errorf("wrong number of arguments (got=%d, want=1)", len(args))
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}
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switch args[0].(type) {
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case *Undefined:
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return TrueValue, nil
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}
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return FalseValue, nil
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}
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